Concrete bearing pile



1940' G. e. GREULICH CONCRETE BEARING FILE Filed NOV. 25, 1938 UL/CH,

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Patented Jan. 16 1940 UNITED STATES PATENT OFFICE w ooiwonn'rn BEARING PILE 1 Gerald G. Greulich, Mount Lebanon, Pa. Application November 23, 1938, Serial No. 242,088 I 1 Claim (01. 61-56) This invention relatesto bearing piles and, more particularly, toreenforced bearingpile constructions having an enlargement over that portion of the bearing pile in, firn'i load-carrying soil. i An object of the present invention is to provide a bearing pilehaving a tapered enlargement over a portion of its length with the enlargement decreasing in size down to a point adjacent the penetrating, end of thepile so that the cross-sectional area of the lower and upper portion of the pile isrsubstantially the same.

Other objects and advantages of the present invention will become apparent as the description proceeds and reference is had to the accompanying drawing in which: i a

Figure 1 is an elevation of a bearing pile constructed in accordance with the present invention and showing the tapered enlargement ex truding down through the water and mud into firm soil;

Figure 2 is an elevation taken at right angles to Figure 1; a

Figure 3 is a section on line III-III of Figure 1; t r i Figure i is a section online IV-IV of Figure 1;

a Figure 5 is a section on line V- -V of Figure 1; a

and, i

3 Figure 6 is a detailed elevationof a modified form of tapered enlargement of the bearing pile.

In the drawing, the bearing pile of, the present invention comprises a unitary structure of reenforced concrete and includes an upper straight is shown in Figure 1 as penetrating through the water and mud area. Directly below the top of the firm soil area, the pile," is enlarged, as shown at 3. This enlargement tapers down- 40 wardly from its upper extremities so that the cross-sectional area of, the tapered enlargement portion 2 of square-shaped cross-section, which vide a substantially straight section 4 of equal cross-sectional area as the upper portion 2, while the penetrating end of the pile terminates in a pointed end portion 5.

The entire unitary piling structure is provided 5 with spaced reenforcing members 6 extending transversely of the axis of the bearing pile and vertically positioned reenforcing members I welded or otherwise secured to the transverse reenforcing member 6. i 10 The unitary reenforced concrete bearing pile of the present invention is so constructed and arranged as to provide two parallel straight sides indicated, in Figure-2, at 8 and 9, while the sides at right angles, to the straight sides 8 and 9 15 project outwardly over that portion of the tapered enlargement so as to provide sufiicient taper in order to develop high load capacity of the bearing pile in clayor cohering soil and provide oblique load-carrying components act- 0 ing to support the sides of the tapered area.

The unitary structure, as illustrated, is of square cross-section but it may be of rectangular cross-section or any other desired shape.

While I have shown and describedas specific 25 embodiment of the present invention, it will be seen that I do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of the invention, as defined by the following claim.

I claim:

A bearing pile comprising a unitary reenforced concrete member of uniform thickness throughout its length comprising an upper straight portion of uniform cross-section, a penetrating end, an

intermediate enlargement tapering downwardly and transverse reenforcing members embedded within said tapered enlargement.

GERALD G. GREULICH. 

